Splunk Enterprise 6.2.3 and Splunk Light 6.2.3 address five vulnerabilities.
At the time of this announcement, Splunk is not aware of any cases where these vulnerabilities have been actively exploited. Previous Product Security Announcements can be found on our Splunk Product Security Portal. Use SPL numbers when referencing issues in communication with Splunk. If there is no CVE Identifier listed with a vulnerability, it will be added once it is assigned by a CVE Numbering Authority. To standardize the calculation of severity scores for each vulnerability, when appropriate, Splunk uses Common Vulnerability Scoring System version 2.
To mitigate these issues, Splunk recommends upgrading to the latest release and applying as many of the Hardening Standards from the Securing Splunk documentation as are relevant to your environment. Splunk Enterprise and Splunk Light releases are cumulative, meaning that future releases will contain fixes to these vulnerabilities, new features and other bug fixes.
Description: Splunk Enterprise 6.2.x before 6.2.3 and Splunk Light 6.2.x before 6.2.3 are affected by multiple OpenSSL vulnerabilities resolved by OpenSSL 1.0.1m. The most severe of these issues could result in a crash during TLS connections.
Note: OpenSSL upgrades for other versions of Splunk Enterprise will be shipped in future maintenance releases.
CVSS Base Score | 2.6 |
CVSS Impact Subscore | 2.9 |
CVSS Exploitability Subscore | 4.9 |
Overall CVSS Score | 2.6 |
Description: In search head cluster configurations of Splunk Enterprise 6.2.x, KV store provided no method for disabling SSLv3. This could permit a man-in-the-middle attacker to force a downgrade to SSLv3 between members of the search head cluster's KV store replication protocol.
CVSS Base Score | 5.1 |
CVSS Impact Subscore | 6.9 |
CVSS Exploitability Subscore | 4.9 |
Overall CVSS Score | 5.1 |
Description: When using Splunk Web with SSL enabled, the secure flag is not consistently set for all URL paths. This vulnerability affects versions of Splunk Enterprise 6.2.x before 6.2.3 and Splunk Light before 6.2.3. This vulnerability could lead to leaking session cookies over HTTP when a user visits specific URLs.
CVSS Base Score | 5.4 |
CVSS Impact Subscore | 6.9 |
CVSS Exploitability Subscore | 5.4 |
Overall CVSS Score | 6.8 |
Description: The Splunk Enterprise 6.2.x search functionality contains a cross-site scripting vulnerability. This can be triggered by user-interaction or via malicious search data.This vulnerability affects versions of Splunk Enterprise 6.2.x before 6.2.3 and Splunk Light before 6.2.3. This vulnerability could lead to leaking session cookies over HTTP when a user visits a series of attacker controlled URLs.
Credit
Splunk would like to thank Cisco CSIRT team for the privately reporting this vulnerability.
CVSS Severity (version 2.0):
CVSS Base Score | 8.8 |
CVSS Impact Subscore | 9.2 |
CVSS Exploitability Subscore | 8.6 |
Overall CVSS Score | 8.8 |
Description: Splunk Enterprise 6.2.x before 6.2.3, 6.1.x before 6.1.7, 6.0.x before 6.0.8, and 5.0.x before 5.0.12 and Splunk Light before 6.2.3 contain a reflected cross-site scripting vulnerability in the management and configuration pages. This could allow an attacker to perform actions in the user context via a crafted URL.
CVSS Base Score | 8.8 |
CVSS Impact Subscore | 9.2 |
CVSS Exploitability Subscore | 8.6 |
Overall CVSS Score | 8.8 |